In the event of you searching for the best in business QR code generator site, your best bet would be to look for https://www.oysso.com/qr-code-generator. They would assist you in generating various kinds of QR codes suitable to your specific needs. They would ensure that you get the QR codes generated and mobile optimized. There has been utmost need for mobile optimization of the QR codes in the present times.
It has been deemed of great importance that the QR code landing page generated by you should be mobile optimized as most of your customers would be scanning the QR code using their smartphones.